How do I remove subdivision loops?
You can select them with AltRMB (or AltShiftRMB to keep the existing selection), and then delete them with Delete > Edge loops, or DeleteG if you want to take advantage of menu hotkeys.



If you have many loops which you want to select, but don't want to click on each one, you can use Multi select loops, either from 3D view > Header > Select > Edge loops, or Space> Multi select loops.